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2007

Cascading DGP

de Rham, Claudia, Dvali, Gia, Hofmann, Stefan et al.

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We present a higher codimension generalization of the DGP scenario which, unlike previous attempts, is free of ghost instabilities.

The 4D propagator is made regular by embedding our visible 3-brane within a 4-brane, each with their own induced gravity terms, in a flat 6D bulk.
The model is ghost-free if the tension on the 3-brane is larger than a certain critical value, while the induced metric remains flat.
The gravitational force law `cascades' from a 6D behavior at the largest distances followed by a 5D and finally a 4D regime at the shortest scales.

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G. R. Dvali, G. Gabadadze and M. Porrati, Phys. Lett. B 484
2000
Earlier work this paper cites.
G. R. Dvali and G. Gabadadze, Phys. Rev. D 63
2001
Earlier work this paper cites.
C. Deffayet, G. Dvali, G. Gabadadze and A. Vainshtein, Phys. Rev. D 65
Original
2002
Earlier work this paper cites.

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Then

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